Vermont Natural Slate quarried for roofing stock is of dense, sound rock and exceedingly tough and durable. This Slate Roofing and Natural Slate Roofing Tile colors, sizes and texture afford many architectural effects, contributing to the appearance and beauty of any building. These roofs have lasted a century, giving best long-term value, in contrast to other types of manufactured roofing which must be re-roofed three or four times within this same period.